N'oge na-adịbeghị anya, otu ndị nyocha na Chinese Academy of Sciences (CAS) nke dabeere na polycrystalline gallium-rich gallium-gallium-rich Gallium oxide Materials (PGR-GaOX) tụpụtara maka oge mbụ atụmatụ imewe ọhụrụ maka nnukwu mmetụta uche na oke ọsọ nzaghachi dị eluihe nchọpụta fotosite na mmetụta pyroelectric na photoconductivity jikọtara ọnụ, e bipụtakwara nyocha dị mkpa na Advanced Materials.ihe nchọpụta fotoelectric(maka eriri ultraviolet miri emi (DUV) ruo X-ray) dị oke mkpa n'ọtụtụ ngalaba, gụnyere nchekwa mba, ọgwụ, na sayensị ụlọ ọrụ mmepụta ihe.
Agbanyeghị, ihe ndị dị na semiconductor dị ugbu a dịka Si na α-Se nwere nsogbu nke nnukwu mmiri mmiri na obere ihe na-amịkọrọ X-ray, nke siri ike izute mkpa nchọpụta arụmọrụ dị elu. N'ụzọ dị iche, ihe ndị dị na semiconductor gallium oxide gap-band (WBG) na-egosi nnukwu ikike maka nchọpụta fotoelectric ike dị elu. Agbanyeghị, n'ihi ọnyà miri emi a na-apụghị izere ezere n'akụkụ ihe na enweghị nhazi dị irè na nhazi ngwaọrụ ahụ, ọ na-esiri ike ịghọta nnukwu mmetụta na ọsọ nzaghachi dị elu nke ihe nchọpụta photon ike dị elu dabere na semiconductor gap-band. Iji dozie ihe ịma aka ndị a, otu ndị nyocha na China emepụtala diode fotoconductive pyroelectric (PPD) dabere na PGR-GaOX maka oge mbụ. Site na ijikọ mmetụta pyroelectric interface na mmetụta photoconductivity, arụmọrụ nchọpụta ka mma nke ukwuu. PPD gosipụtara nnukwu mmetụta na DUV na X-ray, yana ọnụego nzaghachi ruo 104A/W na 105μC×Gyair-1/cm2, n'otu n'otu, ihe karịrị ugboro 100 karịa ihe nchọpụta gara aga ejiri ihe ndị yiri ya mee. Tinyere nke ahụ, mmetụta pyroelectric nke njikọ ahụ kpatara site na nhazi polar nke mpaghara mbelata PGR-GaOX nwere ike ịbawanye ọsọ nzaghachi nke ihe nchọpụta ahụ site na ugboro 105 ruo 0.1ms. Ma e jiri ya tụnyere photodiodes nkịtị, ụdị PPDS nke na-arụ ọrụ onwe ya na-emepụta uru dị elu n'ihi ubi pyroelectric n'oge mgbanwe ọkụ.
Tinyere nke ahụ, PPD nwere ike ịrụ ọrụ na ụdị bias, ebe uru ahụ dabere nke ukwuu na voltaji bias, enwere ike nweta uru dị elu site na ịbawanye voltaji bias. PPD nwere nnukwu ikike itinye n'ọrụ na obere oriri ike na sistemụ mmezi onyonyo dị elu. Ọrụ a anaghị egosi naanị na GaOX bụ nkwaihe nchọpụta foto ike dị eluihe, mana ọ na-enyekwa atụmatụ ọhụrụ maka imezu ihe nchọpụta ike dị elu dị elu.
Oge ozi: Sep-10-2024